Guillot Caves
Protected Area
Gouliot Caves and Headland, Sark
Why dive here
With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - Guillot Caves offers some of Cornwall & Devon's richest cave diving. Water ranges 10-18°C, warmest July, August, September.
The Guillot Caves offer a unique cave diving experience in Cornwall. Divers here will navigate a series of interconnected chambers, often with a good chance of spotting various crustaceans tucked into crevices. It's a site best suited for experienced divers comfortable with overhead environments and navigating tight spaces. Visibility can be a bit variable, so we'd suggest going on a calm day.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
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Conditions
Ocean conditions, forecast and tides for Guillot Caves
Guillot Caves Ocean Conditions
Monthly averages for Guillot Caves, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)
October Averages
Sea Temperature
17°C
62°F · Range: 15.1–17.5°C
Air Temperature
13°C
56°F
Wind Speed
8.14 m/s
15.8 knots
Atmospheric Pressure
1011 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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